How to fix thin crack in fuselage?

[Flyboy666]

I took a hard landing with my Aeroscout and the fuselage now has a thin crack, halfway around. I taped it at the field with Scotch packing tape, and it held fine and flew fine. But I want a more permanent repair.
I thought I would simply inject some glue, such as Foamtac, into the slot and then glue it together. The problem is that the crack is so thin and the fuselage is flexing so little, that I cannot get the nozzle of the Foamtac into the crack without making the crack bigger, and flexing the fuselage even more. Which I do not want to do.
Any thoughts or suggestions on how to proceed? Should I simply close up the crack and put some glue on top (rather than inside) the crack, to seal it from the outside? However, I'm not sure how much structural rigidity this would provide.
Is there a product that has a super-thin nozzle that I could insert into the crack, and then fill the gap with the glue?
Hot glue? (Which I don't have and have never used, so I'm not sure this is a good option anyway.)
Open to any suggestions or guidance on this. Photos attached.

UPDATE: I found these two products that might solve the problem. Anyone have experience with them?

https://www.amazon.com/gp/product/B0...PC98MC5Z&psc=1

https://www.amazon.com/gp/product/B0...qh_dp_hza?th=1

Thanks

 

[Brady Matthews]

The bottom link looks like your better option to me

 

[WickedFog]

I took a hard landing with my Aeroscout and the fuselage now has a thin crack, halfway around. I taped it at the field with Scotch packing tape, and it held fine and flew fine. But I want a more permanent repair.
I thought I would simply inject some glue, such as Foamtac, into the slot and then glue it together. The problem is that the crack is so thin and the fuselage is flexing so little, that I cannot get the nozzle of the Foamtac into the crack without making the crack bigger, and flexing the fuselage even more. Which I do not want to do.
Any thoughts or suggestions on how to proceed? Should I simply close up the crack and put some glue on top (rather than inside) the crack, to seal it from the outside? However, I'm not sure how much structural rigidity this would provide.
Is there a product that has a super-thin nozzle that I could insert into the crack, and then fill the gap with the glue?
Hot glue? (Which I don't have and have never used, so I'm not sure this is a good option anyway.)
Open to any suggestions or guidance on this. Photos attached.

UPDATE: I found these two products that might solve the problem. Anyone have experience with them?

https://www.amazon.com/gp/product/B0...PC98MC5Z&psc=1

https://www.amazon.com/gp/product/B0...qh_dp_hza?th=1

Thanks

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CA glue melts foam like you were holding a torch on it. I melted an entire swamp boat hull my brother was building when I was a kid. I was trying to fix it, but by the time I got done with it, the boat had melted into a puddle.

I use this to glue foam. It holds really well. Not sure what the actual airplane guys use, but this stuff will tear foam away if you pull a joint apart.
https://a.co/d/4c5J45S

You could buy a syringe and inject it into the crack, but it will need a good size needle to flow.

 

[Flyboy666]

The bottom link looks like your better option to me

Thanks. I need to be sure it's safe for EPO. I posted a question in the Reviews section. and will see if anyone responds. I am also going to contact Bob Smith and ZAP to see what they might recommend.

 

[WickedFog]

Thanks. I need to be sure it's safe for EPO. I posted a question in the Reviews section. and will see if anyone responds. I am also going to contact Bob Smith and ZAP to see what they might recommend.

Bob Smith should have something.

 

[Doom!]

5 minute epoxy will work.

 

[tudordewolf]

I took a hard landing with my Aeroscout and the fuselage now has a thin crack, halfway around. I taped it at the field with Scotch packing tape, and it held fine and flew fine. But I want a more permanent repair.
I thought I would simply inject some glue, such as Foamtac, into the slot and then glue it together. The problem is that the crack is so thin and the fuselage is flexing so little, that I cannot get the nozzle of the Foamtac into the crack without making the crack bigger, and flexing the fuselage even more. Which I do not want to do.
Any thoughts or suggestions on how to proceed? Should I simply close up the crack and put some glue on top (rather than inside) the crack, to seal it from the outside? However, I'm not sure how much structural rigidity this would provide.
Is there a product that has a super-thin nozzle that I could insert into the crack, and then fill the gap with the glue?
Hot glue? (Which I don't have and have never used, so I'm not sure this is a good option anyway.)
Open to any suggestions or guidance on this. Photos attached.

UPDATE: I found these two products that might solve the problem. Anyone have experience with them?

https://www.amazon.com/gp/product/B0...PC98MC5Z&psc=1

https://www.amazon.com/gp/product/B0...qh_dp_hza?th=1

Thanks

View attachment 209462

View attachment 209463

You want BSI super-gold+, it's foam safe super-glue.

I wouldn't bother with the injector tips too much, there's some sort of reaction that clogs up the metal ones instantly. The plastic ones are ok but it winds up being more mess than it's worth. If you just press the tip of the glue bottle against the crack it'll wick in easily enough, and then you can work it in by squeezing the fuselage around the crack a few times.

 

[Flyboy666]

You want BSI super-gold+, it's foam safe super-glue.

I wouldn't bother with the injector tips too much, there's some sort of reaction that clogs up the metal ones instantly. The plastic ones are ok but it winds up being more mess than it's worth. If you just press the tip of the glue bottle against the crack it'll wick in easily enough, and then you can work it in by squeezing the fuselage around the crack a few times.

Thanks and good points. I will call BSI about the Super Gold +. They also make Super Gold, which is thinner, so I will ask about that as well.

 

[Hobbydude2]

I took a hard landing with my Aeroscout and the fuselage now has a thin crack, halfway around. I taped it at the field with Scotch packing tape, and it held fine and flew fine. But I want a more permanent repair.
I thought I would simply inject some glue, such as Foamtac, into the slot and then glue it together. The problem is that the crack is so thin and the fuselage is flexing so little, that I cannot get the nozzle of the Foamtac into the crack without making the crack bigger, and flexing the fuselage even more. Which I do not want to do.
Any thoughts or suggestions on how to proceed? Should I simply close up the crack and put some glue on top (rather than inside) the crack, to seal it from the outside? However, I'm not sure how much structural rigidity this would provide.
Is there a product that has a super-thin nozzle that I could insert into the crack, and then fill the gap with the glue?
Hot glue? (Which I don't have and have never used, so I'm not sure this is a good option anyway.)
Open to any suggestions or guidance on this. Photos attached.

UPDATE: I found these two products that might solve the problem. Anyone have experience with them?

https://www.amazon.com/gp/product/B0...PC98MC5Z&psc=1

https://www.amazon.com/gp/product/B0...qh_dp_hza?th=1

Thanks

View attachment 209462

View attachment 209463

Bob Smith Industries craft glue. Foam Cure. Best stuff in town. Just clean it up and glue away, wipe off excess and let it dry. Tooth picks for snapped off wings. Easy Cheesy.